Snap fastener and installation thereof



Sepi- 26, 1933 K A. G. ANDERSON l,928,584

SNAP FASTENER AND INSTALLATION THEREOF I Filed June 1l, 1951 autres sept.. as, resa y SNAP FASTENER AND INSTALLATEUN THEREOF Andrew G. Anderson, Wellaston, Mass., assigner yto United-Carr Fastenerv Corporation, Cambridge, Mass., a corporation of Massachusetts V .application .rune n, 193i. serial Ne. :nasca Claims.

n rubber shoes and the like;

y Fig. 2 is an enlarged section taken on the line 2-2 of Figure 1; and

Fig. 3`is a'section of the stud installation showing the relation of the parts just prior to assembly., i

Referring to the drawing I have shownsnap fastener members particularly, though notr eX- clusively, useful in connection'with bathing hats, or other rubber devices needing a so-called slide fastener. Y f While I have shown a particular snap fastener godevice for a particular use,\it ,should vbe undern vstood that other types of fasteners may be used yand their construction will depend largely upon the construction of the rubber articles to which they are to be attached.

My snap `fastener members are i made of aluminum or' any other metal having a noncopper content because I have found that ordinary snap fastenersmade from copper or brass are not suitable for use on rubber articles. These copper content fasteners react upon the rubber carrying-medium Ain such a manner that the rubber is spoiled adjacent to where the fastener members are attached, thereby `rendering the articles unt vfor sale and in many cases unfit for use.

While I have found that fasteners made from aluminum overcome the diiiiculties of fasteners formed from copper content metals, I-have also been required to incorporate certain features of construction because of the fact that aluminum is relatively soft. y

As an example of my invention I have shown a stud installation which includes a snap fastener stud member formed from sheet aluminum and having a base l from'vvhich is pressed a boss formed to provide'a head 2 and a neck 3.

Adjacent to the point where the boss of the stud is connected to the base, I have provided an annular rib 4 in the base (Figs. 2 and3) to pro vide strengthto the stud member at that point. The carrying medium forfthe stud in this particular instance is the rubber strap 5 of a bathing cap (not shown), or it may be a portionr of the bathing cap itself depending upon the construction; As a means of attaching the stud to.

(Cl. 2li-23.9)

the rubber-carrying medium 5, I have provided a rivet (Fig. 3) having a base 6 from which is pressed a tubular shank "Z having its free`1 end open, as illustrated. Adjacentto the free end of the tubular portion of the rivet I havesuitably formed the material toprevide a relatively sharp cutting edge 8 and a reinforcing means in the formof a shoulder 9 spaced a slight distance from the end (Fig. 3) thereby to back-support the cutting edge oi the tubular portion 7 so that` it may 65 be forced through the rubber-carrying medium 5,' thereby cutting a hole therethrough. 'As thetubular portion 7 of the rivet passes into the` boss portion oi? the stud during attachment of rthe parts of the stud installation, the free endj oi the rivet contacts with the curved inner vsurface of the head 2 of the 'stud and is upset in substantially the same manner as shown in Fig.

-2, thereby securely attaching the ystud to the ,carrying medium 5.

The tubular rivet is also#5 made from sheet aluminum, or other suitable non-copper content material. In theparticular rivet structure illustrated in the drawing, the shoulder 9 adjacent to the end of the tubular portion 7 strengthens the aluminum and the rib 8'0 e on the base of the stud strengthens the aluminum of the stud member so that during the cutting operation the parts of the stud installation may withstand the pressure exerted upon them, thereby permitting them to retaintheir proper 85 shape during this operation.

The socket member which I have selected for use in connection with the stud member above described is also made from sheet aluminum or other suitable non-copper content material and .90 is of the so-called'slidable type adapted to be attached to a strap 10 (Figs. l and 2) and adapted to be slidable relative thereto. The particular socket illustrated includes a plate portion `11 having strap-receiving slots 12-12 and a yield-(95 able stud-engaging part 13 attached to a portion p 14 located between the strap-receiving slots My improved fastener members are particularly useiul to rubber goods manufacturers andflo@ having been developed after considerable eXperil mental work to overcome the objections tothe use of soft metals such, for instance, as aluminum in order to correct the difhculties which arise in connection With the use of the ordinary type of (105 fastener made from metal having a copper content. y

While I have illustrated and described a pre-A ferred embodiment of my invention, I do not wish to be limited thereby, because the scope of mygjl 1g portion of said rivet before attachment having 'a thickened portion providing reinforcing'means formed at its free end to prevent collapsing of ther end upon being forced through the carrying medium.

2. A snap fastener installation comprising, in combination, a rubber content carrying medium, a snap fastener stud part located at one side of said carrying medium, said stud having a base anda hollow socketengaging boss extending from saidbase and an attaching rivet formed from soft non-copper content metal and having a base and a tubular portion extending from said base through the carrying medium and upset within the boss of the stud vpart to secure the parts ofthe installation together, said tubular portion of said rivet before attachment having Aathickened portion providing an inwardly ex'- vtending annular shoulder at the inner surface thereo'adjacent to the free edge-to thicken said rivet and said tubular portion tapering from said shoulder to the free end to provide a cutting edge for self-piercing of the carrying medium.

3. A'snap fastener installation comprising, in combination, a rubber` content carrying medium, a-snap fastener'stud-part located at one side of-said carrying medium, said stud being formed from a soft non-copper content metal and having afbase and a-hollow socket-engaging boss extending from said base and reinforcing means formed in saidstud adjacent to the point Where the boss joins the base and an attaching rivet formed from soft non-copper content metal and having a base and a tubular portion extending from said base through the carrying medium and upset within the boss of the stud part to secure the parts of the installation together, said tubular Yportion of said rivet before attachment having'ra reinforcing means formed at its free end to prevent collapsing of the end upon being forced through the carrying medium.

Yfi. A snap fastener installation comprising, in combination, a supporting structure of rubber, a snap fastener member attached to one side of said supporting structure and being formed from aluminum, said snap fastener member having a base 1, a hoilowrboss extending from said base and providing a 'socket-engaging head 2 and a neel; 3 and an annular rib 4 provided in said base adjacent to the point where the boss connects with the base and an aluminum rivet having a base cooperating with the base 1 of the stud to grip the rubber supporting structure therebetween, and said rivet having a hollow tubularportion 'Tiforced through the supporting structure and upset Within the head of the stud to secure the parts of the installation together.

5. A snap fastener installation comprising, in combination, a rubber content carrying medium, a snap fastener stud part located at one side of said carrying medium, said stud'bcing formed from a soit non-copper content metal and hav- *il inga base and a hollow socket-engaging boss extending from said base and reinforcing means formed in said stud adjacent to the point where the boss joins the base and an 'attaching member formed from soft noncopper content metal and having a base and a hollow shank portion extending from saidbase through the carrying medium and upset within the boss of the stud part to secure the parts of the installation together,

and said reinforcing means of the stud preventing distortion of the stud when the shank of the attaching member is forced into attaching position.

ANDREW G. ANDERSON. 

